/* =========================================================
   妍序設計 YANXU DESIGN — 設計系統 v4
   參考實景：淨白 × 淺橡木 × 墨綠大理石 × 炭灰
   主題：光（柔和窗光）× 序（細線網格・序列）。強化白對比。
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --c-bg:        #f4f2ec;   /* 暖白基底 */
  --c-bg-2:      #ffffff;
  --c-paper:     #ffffff;
  --c-ink:       #29251f;   /* 暖炭文字 */
  --c-ink-soft:  #6f675c;
  --c-line:      #e6e0d3;
  --c-line-2:    #efeae0;

  /* 材質與跳色 */
  --c-oak:       #c6a571;   /* 淺橡木 */
  --c-oak-soft:  #e7d8bd;
  --c-green:     #8a5a30;   /* 溫潤橡木（原墨綠，改為截圖木色） */
  --c-green-deep:#5d3a1e;   /* 深胡桃木 */
  --c-green-soft:#a9794a;
  --c-stone:     #8c847a;   /* 灰石 */
  --c-sun:       #fbf3df;   /* 暖窗光 */
  --c-metal:     #a98a5a;   /* 橡木金（小標） */

  /* 木紋質感（細緻直紋，疊於木色面上；以 soft-light 混合不影響文字閱讀） */
  --wood-grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='640' height='220'%3E%3Cfilter id='w'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.013 0.4' numOctaves='4' seed='11' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0.15 0 0 0 0 0.085 0 0 0 0 0.03 0 0 0 0.5 0'/%3E%3C/filter%3E%3Crect width='640' height='220' filter='url(%23w)'/%3E%3C/svg%3E");

  /* 相容 works.css（鎖定區） */
  --c-navy:      var(--c-ink);
  --c-navy-deep: #4a2f18;   /* 作品面板底（暖木暗） */
  --c-accent:    var(--c-green);
  --c-accent-soft: var(--c-oak-soft);
  --c-silver:    #c8bca9;

  --f-display: "Bodoni Moda", "Noto Serif TC", serif;
  --f-serif:   "Noto Serif TC", serif;
  --f-mono:    "Space Mono", ui-monospace, "Courier New", monospace;
  --f-sans:    "Noto Sans TC", -apple-system, "Segoe UI", sans-serif;

  --maxw: 1280px;
  --gutter: clamp(20px, 5vw, 84px);
  --section-y: clamp(80px, 11vw, 172px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --sun-pool: radial-gradient(50% 60% at 86% -6%, rgba(251,243,223,.5), transparent 62%);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 92px; overflow-x: clip; }
body {
  font-family: var(--f-sans); color: var(--c-ink);
  background: linear-gradient(176deg, #f8f6f1 0%, #f4f1ea 60%, #efece2 100%) fixed;
  line-height: 1.78; font-size: 16px; letter-spacing: 0.01em; overflow-x: clip; -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
html::after { content: ""; position: fixed; inset: 0; z-index: 60; pointer-events: none; opacity: .4;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0.32  0 0 0 0 0.28  0 0 0 0 0.2  0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 150px 150px; }
@media (prefers-reduced-motion: reduce) { html::after { display: none; } }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--c-green); color: #fff; }
:focus-visible { outline: 2px solid var(--c-green); outline-offset: 3px; }

/* ---------- Helpers ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); position: relative; }
.section > .wrap { position: relative; z-index: 1; }
.eyebrow { display: inline-flex; align-items: center; gap: .8rem; font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--c-green); font-weight: 700; margin-bottom: 1.5rem; }
.eyebrow::before { content: ""; width: 30px; height: 2px; background: var(--c-green); opacity: .55; }
.section-title { font-family: var(--f-serif); font-weight: 600; color: var(--c-ink); font-size: clamp(1.7rem, 4.6vw, 3.3rem); line-height: 1.3; letter-spacing: 0.02em; text-wrap: balance; }
.section-title, .hero__title, .hero__sub, .hero__zh, .about__statement, .about__card p,
.contact__title, .contact__lead, .srow h3, .srow p, .step__title, .step__desc,
.qtab, .qpanel { word-break: keep-all; overflow-wrap: break-word; }

/* ---------- Reveal / rise / img-reveal（main.js） ---------- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .95s var(--ease), transform .95s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .1s; } .reveal.d2 { transition-delay: .2s; } .reveal.d3 { transition-delay: .3s; }
.has-js .hero__title:not(.rise), .has-js .section-title:not(.rise), .has-js .contact__title:not(.rise) { opacity: 0; }
.rise { overflow: hidden; }
.rise > .rise__i { display: block; transform: translateY(120%); transition: transform 1.05s var(--ease); }
.rise.in > .rise__i { transform: none; }
.img-reveal { position: relative; isolation: isolate; }
.img-glow { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 110%; height: 110%; max-width: none; object-fit: cover; z-index: -1; filter: blur(20px) saturate(1.2); opacity: 0; transition: opacity 1.4s var(--ease); pointer-events: none;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 22%, #000 78%, transparent 100%), linear-gradient(to bottom, transparent 0%, #000 22%, #000 78%, transparent 100%); -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to right, transparent 0%, #000 22%, #000 78%, transparent 100%), linear-gradient(to bottom, transparent 0%, #000 22%, #000 78%, transparent 100%); mask-composite: intersect; }
.img-reveal.in .img-glow { opacity: .5; }
.img-reveal img:not(.img-glow) { position: relative; z-index: 1; clip-path: inset(0 0 100% 0); transform: scale(1.05); transition: clip-path 1.15s var(--ease), transform 1.4s var(--ease); }
.img-reveal.in img:not(.img-glow) { clip-path: inset(0 0 0 0); transform: scale(1); }
@media (prefers-reduced-motion: reduce) {
  .reveal, .rise > .rise__i, .img-reveal img:not(.img-glow) { opacity: 1; transform: none; clip-path: none; transition: none; }
  .img-reveal.in .img-glow { opacity: 1; } html { scroll-behavior: auto; }
}

/* ---------- Logo / buttons ---------- */
.ylogo { height: 100%; width: auto; }
.ylogo path { fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; }
.logo-mark { height: 48px; color: var(--c-ink); flex: none; display: block; }
.btn { display: inline-flex; align-items: center; gap: .8rem; font-family: var(--f-mono); font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; padding: 1rem 2rem; border: 1.5px solid var(--c-ink); color: var(--c-ink); transition: background .4s var(--ease), color .4s var(--ease), border-color .4s var(--ease); }
.btn:hover { background: var(--c-green); border-color: var(--c-green); color: #fff; }
.btn--wood, .btn--navy { border-color: var(--c-green); color: var(--c-green); }
.btn--wood:hover, .btn--navy:hover { background: var(--c-green); color: #fff; }
.btn__arrow { transition: transform .4s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(5px); }

/* =========================================================
   Header / Nav
   ========================================================= */
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 100; display: flex; align-items: center; justify-content: space-between; padding: 1.1rem var(--gutter); transition: background .45s var(--ease), padding .45s var(--ease), box-shadow .45s var(--ease); }
.site-header.scrolled { background: rgba(244,242,236,.9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); padding-block: .6rem; box-shadow: 0 1px 0 var(--c-line); }
body.menu-open .site-header { z-index: 140; background: transparent; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
.brand { display: flex; align-items: center; gap: .8rem; }
.brand .logo-mark { height: 42px; }
.brand__txt { display: flex; flex-direction: column; line-height: 1.05; }
.brand .zh { font-family: var(--f-serif); font-size: 1.1rem; font-weight: 600; letter-spacing: 0.22em; }
.brand .en { font-family: var(--f-mono); font-size: 0.54rem; letter-spacing: 0.34em; color: var(--c-green); text-transform: uppercase; margin-top: 3px; font-weight: 700; }
.nav { display: none; }
.nav-toggle { display: flex; align-items: center; justify-content: center; width: 46px; height: 46px; position: relative; z-index: 130; color: var(--c-ink); }
.nav-toggle .tg-logo { height: 34px; width: auto; transition: opacity .42s var(--ease); }
body.menu-open .nav-toggle .tg-logo { opacity: 0; }
.nav-toggle .tg-x { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-family: var(--f-display); font-weight: 600; font-size: 40px; line-height: 1; color: #fff; transform: scaleX(.66) scaleY(1.06); opacity: 0; transition: opacity .42s var(--ease); pointer-events: none; }
body.menu-open .nav-toggle .tg-x { opacity: 1; }
.mobile-nav__backdrop { position: fixed; inset: 0; z-index: 119; background: rgba(50,32,16,.5); opacity: 0; visibility: hidden; transition: opacity .45s var(--ease); -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px); }
body.menu-open .mobile-nav__backdrop { opacity: 1; visibility: visible; }
.mobile-nav { position: fixed; top: 0; right: 0; bottom: 0; z-index: 121; width: clamp(280px, 84vw, 400px); background: var(--c-green-deep); background-image: var(--wood-grain); background-size: 480px 200px; background-blend-mode: soft-light; color: #fff; box-shadow: -24px 0 70px rgba(34,22,10,.42); display: flex; flex-direction: column; justify-content: center; padding: 5.5rem 2.6rem 3rem; gap: clamp(1rem, 3.2vh, 1.7rem); transform: translateX(100%); transition: transform .5s var(--ease); visibility: hidden; overflow-y: auto; }
.mobile-nav::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: var(--sun-pool); opacity: .5; }
body.menu-open .mobile-nav { transform: none; visibility: visible; }
.mobile-nav a { position: relative; font-family: var(--f-serif); font-size: 1.5rem; letter-spacing: .12em; color: #fff; display: flex; align-items: baseline; gap: .9rem; }
.mobile-nav a .mn-no { font-family: var(--f-mono); font-size: .7rem; color: var(--c-oak); }
.mobile-nav a:hover { color: var(--c-oak); }
.mobile-nav .mn-foot { position: relative; margin-top: 2rem; font-family: var(--f-mono); font-size: .72rem; letter-spacing: .1em; color: rgba(255,255,255,.55); }
.mobile-nav .mn-foot a { font-family: var(--f-mono); font-size: .8rem; display: block; letter-spacing: .06em; color: rgba(255,255,255,.8); }

/* =========================================================
   Hero — 淨白 × 柔窗光 × 橡木金細線 × 影像深框
   ========================================================= */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; padding-block: clamp(120px, 16vh, 180px) clamp(60px, 9vh, 110px); background: linear-gradient(155deg, #fdfcf9 0%, #f6f4ee 54%, #eef0e9 100%); }
.hero::before { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(42% 54% at 84% 2%, rgba(255,255,252,.95), rgba(255,253,248,0) 70%), radial-gradient(56% 60% at 92% 10%, rgba(251,243,223,.6), transparent 62%), radial-gradient(54% 60% at 2% 106%, rgba(138,90,48,.09), transparent 60%); }
.hero::after { content: ""; position: absolute; z-index: 1; pointer-events: none; top: 12%; bottom: 12%; left: calc(var(--gutter) - 1px); width: 2px; background: linear-gradient(180deg, transparent, var(--c-oak) 18%, var(--c-oak) 82%, transparent); opacity: .85; }
.hero__mark { position: absolute; left: -3%; top: 50%; transform: translateY(-50%); height: 116%; width: auto; color: var(--c-green); opacity: .06; z-index: 0; pointer-events: none; }
.hero__inner { position: relative; z-index: 2; width: 100%; }
.hero__layer { position: relative; min-height: 60vh; }
.hero__block { position: absolute; right: 2.5%; top: -5%; width: 51%; height: 110%; background-color: var(--c-green); background-image: var(--wood-grain); background-size: 440px 190px; background-blend-mode: soft-light; z-index: 0; }
.hero__media { position: absolute; right: 0; top: 5%; width: 56%; height: 92%; z-index: 1; box-shadow: 0 50px 90px -44px rgba(30,40,30,.5); }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__card { position: relative; z-index: 3; width: 53%; background: var(--c-paper); padding: clamp(2rem, 3.4vw, 3.4rem) clamp(1.8rem, 3vw, 3rem); box-shadow: 0 50px 96px -46px rgba(30,40,30,.34); margin-top: clamp(2rem, 7vh, 6rem); }
.hero__card::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: linear-gradient(90deg, var(--c-oak), var(--c-green)); }
.hero__kicker { font-family: var(--f-mono); display: inline-flex; align-items: center; gap: 1rem; font-size: 0.66rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--c-green); font-weight: 700; margin-bottom: 1.5rem; }
.hero__kicker::before { content: ""; width: 42px; height: 2px; background: var(--c-oak); }
.hero__title { display: block; }
.hero__brand { display: block; font-family: var(--f-display); font-weight: 600; font-size: clamp(2.8rem, 6.6vw, 5.6rem); line-height: 0.92; letter-spacing: 0.01em; color: var(--c-ink); text-transform: uppercase; }
.hero__zh { display: block; font-family: var(--f-serif); font-weight: 600; font-size: clamp(.95rem, 1.7vw, 1.2rem); letter-spacing: .22em; color: var(--c-green); margin-top: 1.2rem; }
.hero__sub { margin-top: 1.5rem; max-width: 42ch; color: var(--c-ink-soft); font-size: clamp(0.95rem, 1.4vw, 1.05rem); text-wrap: pretty; }
.hero__cta { margin-top: 2rem; }
.hero__scroll { position: absolute; left: var(--gutter); bottom: 2rem; z-index: 3; font-family: var(--f-mono); font-size: 0.62rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--c-ink-soft); display: flex; align-items: center; gap: .8rem; }
.hero__scroll::before { content: ""; width: 44px; height: 2px; background: var(--c-green); animation: scrollLine 2.4s var(--ease) infinite; transform-origin: left; }
@keyframes scrollLine { 0%,100%{transform:scaleX(.4);opacity:.4} 50%{transform:scaleX(1);opacity:1} }

/* =========================================================
   About — 影像 × 墨綠卡（受柔光）
   ========================================================= */
.about { overflow: hidden; }
.about::before { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(40% 52% at 96% -6%, rgba(251,243,223,.5), transparent 60%); }
.about__layer { position: relative; display: grid; grid-template-columns: 1fr 1fr; align-items: center; }
.about__media { position: relative; z-index: 1; }
.about__media img:not(.img-glow) { width: 100%; aspect-ratio: 4/5; object-fit: cover; box-shadow: 0 40px 76px -34px rgba(30,40,30,.4); }
.about__media::after { content: ""; position: absolute; left: -14px; top: -14px; width: 64%; height: 38%; border-left: 2px solid var(--c-oak); border-top: 2px solid var(--c-oak); z-index: 2; pointer-events: none; }
.about__card { position: relative; z-index: 3; background-color: var(--c-green); background-image: var(--wood-grain); background-size: 460px 190px; background-blend-mode: soft-light; color: #fff; padding: clamp(2rem, 3.6vw, 3.4rem); margin-left: clamp(-90px, -6vw, -40px); box-shadow: 0 46px 90px -44px rgba(34,22,10,.6); overflow: hidden; }
.about__card::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: var(--sun-pool); opacity: .6; }
.about__card > * { position: relative; z-index: 1; }
.about__card .eyebrow { color: var(--c-oak-soft); }
.about__card .eyebrow::before { background: var(--c-oak-soft); }
.about__statement { font-family: var(--f-serif); font-size: clamp(1.4rem, 2.5vw, 2rem); line-height: 1.6; color: #fff; letter-spacing: 0.03em; text-wrap: balance; }
.about__statement b { color: var(--c-oak-soft); font-weight: 600; }
.about__card p:not(.about__statement) { color: rgba(244,248,243,.8); margin-top: 1.2rem; font-size: .95rem; text-wrap: pretty; }
.stats { display: flex; flex-wrap: wrap; gap: clamp(1.6rem, 4vw, 3rem); margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid rgba(231,216,189,.3); }
.stat .num { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.9rem,3.4vw,2.6rem); line-height: 1; color: var(--c-oak-soft); font-variant-numeric: lining-nums; }
.stat .label { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.16em; color: rgba(244,248,243,.66); margin-top: .5rem; text-transform: uppercase; }

/* =========================================================
   Services 服務項目 — 三欄（01/02/03）；暖米底 × logo 浮水印
   ========================================================= */
.services { position: relative; overflow: hidden; background: linear-gradient(168deg, #f6f1e7 0%, #f1ead9 64%, #ece4d2 100%); box-shadow: inset 0 1px 0 rgba(255,255,255,.5); }
.services::before { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(46% 56% at 92% -4%, rgba(255,253,247,.9), transparent 60%), var(--sun-pool); }
.services > .wrap, .process > .wrap { position: relative; z-index: 1; }
.svc-logo, .proc-logo { position: absolute; right: -2%; top: 50%; transform: translateY(-50%); height: 118%; width: auto; color: var(--c-green); opacity: .05; z-index: 0; pointer-events: none; }
.services__head { max-width: 60ch; margin-bottom: clamp(2.4rem, 5vw, 3.6rem); }

.svc-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2vw, 1.8rem); }
.svc-card { position: relative; display: flex; flex-direction: column; background: #fdfbf6; border: 1px solid var(--c-line); padding: clamp(1.8rem, 2.6vw, 2.6rem) clamp(1.5rem, 2.2vw, 2.2rem) clamp(1.7rem, 2.4vw, 2.3rem); overflow: hidden; transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .5s var(--ease); }
.svc-card::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: var(--ac); }
.svc-card[data-s="1"] { --ac: var(--c-oak); --tint: rgba(198,165,113,.1); }
.svc-card[data-s="2"] { --ac: var(--c-green); --tint: rgba(138,90,48,.09); }
.svc-card[data-s="3"] { --ac: var(--c-stone); --tint: rgba(140,132,122,.1); }
.svc-card:hover { transform: translateY(-8px); box-shadow: 0 42px 72px -46px rgba(60,40,20,.5); border-color: var(--ac); }
.svc-card > * { position: relative; z-index: 1; }
.svc-card__mark { position: absolute; top: clamp(-20px, -1.4vw, -10px); right: clamp(-16px, -1.1vw, -6px); height: clamp(104px, 12vw, 144px); width: auto; color: var(--ac); opacity: .13; z-index: 0; pointer-events: none; transition: opacity .5s var(--ease), transform .5s var(--ease); }
.svc-card:hover .svc-card__mark { opacity: .16; transform: translateY(8px); }
.svc-card__en { display: block; font-family: var(--f-mono); font-size: .62rem; letter-spacing: .24em; text-transform: uppercase; color: var(--c-metal); }
.svc-card__en::before { content: ""; display: inline-block; width: 26px; height: 2px; background: var(--ac); vertical-align: middle; margin-right: .7rem; transform: translateY(-2px); }
.svc-card h3 { font-family: var(--f-serif); font-weight: 600; font-size: clamp(1.4rem, 2.3vw, 1.85rem); color: var(--c-ink); margin: .4rem 0 .75rem; letter-spacing: .04em; }
.svc-card__lead { font-size: clamp(.95rem, 1.3vw, 1.04rem); color: var(--c-ink-soft); line-height: 1.85; text-wrap: pretty; }
.svc-card__chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: auto; padding-top: 1.5rem; border-top: 1px solid var(--c-line-2); }
.svc-chip { font-size: .8rem; color: var(--c-ink-soft); padding: .42rem .85rem; border: 1px solid var(--c-line); border-radius: 999px; background: var(--tint); transition: color .35s var(--ease), border-color .35s var(--ease); }
.svc-card:hover .svc-chip { border-color: color-mix(in oklab, var(--ac) 40%, var(--c-line)); color: var(--c-ink); }

/* =========================================================
   Process 服務流程 — 橫向 7 節點、連續細線；暖米底 × logo 浮水印
   ========================================================= */
.process { position: relative; overflow: hidden; background: linear-gradient(180deg, #f7f2e8 0%, #f2ecdd 70%, #efe7d6 100%); box-shadow: inset 0 1px 0 rgba(255,255,255,.5); }
.process::before { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(40% 50% at 8% 6%, rgba(255,253,247,.7), transparent 60%); }
.process__head { max-width: 60ch; margin-bottom: clamp(2.6rem, 5vw, 4rem); }
.proc-scroll { position: relative; z-index: 1; overflow-x: auto; padding-top: 18px; padding-bottom: .5rem; scrollbar-width: thin; }
.proc-track { position: relative; display: grid; grid-template-columns: repeat(7, 1fr); min-width: 880px; }
.proc-line { position: absolute; top: 32px; left: calc(100% / 14); right: calc(100% / 14); height: 2px; background: linear-gradient(90deg, #cdab7d 0%, #a4703a 52%, #5d3a1e 100%); z-index: 0; }
.proc-step { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; text-align: center; padding: 0 .4rem; }
.proc-step:nth-child(1) { --nc: #c0945c; }
.proc-step:nth-child(2) { --nc: #b3814a; }
.proc-step:nth-child(3) { --nc: #a26f3b; }
.proc-step:nth-child(4) { --nc: #925f30; }
.proc-step:nth-child(5) { --nc: #80502a; }
.proc-step:nth-child(6) { --nc: #6f4422; }
.proc-step:nth-child(7) { --nc: #5d3a1e; }
.proc-step__node { width: 64px; height: 64px; border-radius: 50%; background: var(--nc); border: 1px solid rgba(255,255,255,.22); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 14px 28px -16px rgba(60,40,20,.55); transition: transform .4s var(--ease), box-shadow .4s var(--ease), filter .4s var(--ease); }
.proc-step:hover .proc-step__node { transform: translateY(-6px); box-shadow: 0 22px 36px -16px rgba(60,40,20,.6); filter: brightness(1.07); }
.proc-step__node svg { width: 26px; height: 26px; }
.proc-step__title { font-family: var(--f-serif); font-weight: 600; font-size: clamp(1.05rem, 1.5vw, 1.28rem); color: var(--c-ink); margin: 1.3rem 0 .5rem; letter-spacing: .05em; }
.proc-step__desc { font-size: clamp(.82rem, 1.05vw, .92rem); color: var(--c-ink-soft); line-height: 1.7; max-width: 15ch; margin-inline: auto; text-wrap: balance; }

/* =========================================================
   Works head（面板鎖定）
   ========================================================= */
.works { overflow: hidden; background: var(--c-bg); box-shadow: inset 0 1px 0 rgba(255,255,255,.6); }
.works::before { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(38% 48% at 6% 2%, rgba(251,243,223,.55), transparent 60%); }
.works .section-title { color: var(--c-ink); }
.works__head { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 1.5rem; margin-bottom: clamp(2.5rem,6vw,4.2rem); }

/* =========================================================
   FAQ — 大改：左問題清單 / 右答案面板（分頁互動，無編號）
   ========================================================= */
.faq { background: var(--c-bg-2); box-shadow: inset 0 1px 0 rgba(255,255,255,.6); overflow: hidden; }
.faq::before { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(40% 56% at 100% 102%, rgba(138,90,48,.08), transparent 62%); }
.faq__head { margin-bottom: clamp(2.4rem, 5vw, 3.6rem); max-width: 60ch; }
.faq2 { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 0; border: 1px solid var(--c-line); background: var(--c-paper); box-shadow: 0 40px 80px -50px rgba(30,40,30,.4); }
.faq2__tabs { border-right: 1px solid var(--c-line); display: flex; flex-direction: column; }
.qtab { position: relative; text-align: left; font-family: var(--f-serif); font-size: clamp(1rem, 1.6vw, 1.15rem); font-weight: 500; color: var(--c-ink); padding: clamp(1.1rem, 2vw, 1.5rem) clamp(1.4rem, 2.6vw, 2.2rem); border-bottom: 1px solid var(--c-line-2); transition: background .35s var(--ease), color .35s var(--ease); display: flex; align-items: center; gap: .9rem; }
.qtab:last-child { border-bottom: none; }
.qtab::before { content: ""; flex: none; width: 7px; height: 7px; border-radius: 50%; border: 1.5px solid var(--c-oak); transition: background .3s var(--ease), border-color .3s var(--ease); }
.qtab:hover { background: var(--c-bg); color: var(--c-green); }
.qtab.active { background: var(--c-green); color: #fff; }
.qtab.active::before { background: var(--c-oak-soft); border-color: var(--c-oak-soft); }
.faq2__panels { position: relative; padding: clamp(1.8rem, 3vw, 2.8rem); background: var(--c-bg); }
.faq2__panels::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: var(--sun-pool); opacity: .7; }
.qpanel { display: none; position: relative; z-index: 1; }
.qpanel.active { display: block; animation: qfade .5s var(--ease); }
@keyframes qfade { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.qpanel h4 { font-family: var(--f-serif); font-weight: 600; font-size: clamp(1.2rem,2vw,1.5rem); color: var(--c-green); letter-spacing: .03em; margin-bottom: 1rem; }
.qpanel p, .qpanel li { color: var(--c-ink-soft); line-height: 1.85; }
.qpanel .price { color: var(--c-green); font-weight: 600; }
.qpanel a { color: var(--c-green) !important; border-bottom: 1px solid currentColor; }
.qpanel ul { margin-top: .7rem; display: grid; gap: .45rem; }
.qpanel li { position: relative; padding-left: 1.3rem; }
.qpanel li::before { content: ""; position: absolute; left: 0; top: .62em; width: 7px; height: 7px; border: 1.5px solid var(--c-oak); border-radius: 50%; }

/* =========================================================
   Contact — 墨綠深場（無光紋）+ logo 浮水印
   ========================================================= */
.contact { background-color: #5d3a1e; background-image: var(--wood-grain), linear-gradient(158deg, #7a4c27 0%, #5d3a1e 52%, #432913 100%); background-size: 560px 240px, auto; background-blend-mode: soft-light, normal; color: var(--c-bg); overflow: hidden; }
.contact::before { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(44% 54% at 88% 2%, rgba(251,243,223,.18), transparent 60%), radial-gradient(50% 58% at 0% 102%, rgba(198,165,113,.12), transparent 62%); }
.contact__mark { position: absolute; right: -2%; top: 50%; transform: translateY(-50%); height: 128%; width: auto; color: var(--c-oak-soft); opacity: .06; z-index: 0; pointer-events: none; }
.contact .eyebrow { color: var(--c-oak-soft); }
.contact .eyebrow::before { background: var(--c-oak-soft); }
.contact__head { max-width: 60ch; margin-bottom: clamp(2.4rem, 5vw, 3.6rem); }
.contact__title { font-family: var(--f-serif); font-weight: 600; font-size: clamp(2rem,4.6vw,3.4rem); line-height: 1.28; letter-spacing: .03em; color: #fff; text-wrap: balance; }
.contact__title em { font-style: normal; color: var(--c-oak-soft); }
.contact__lead { color: rgba(244,248,241,.68); margin-top: 1.2rem; max-width: 50ch; text-wrap: pretty; }
.contact__layout { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }
.contact__info dt { font-family: var(--f-mono); font-size: .64rem; letter-spacing: .26em; text-transform: uppercase; color: var(--c-oak-soft); margin-bottom: .4rem; }
.contact__info dd { margin-bottom: 1.7rem; font-size: 1.02rem; line-height: 1.7; }
.contact__info dd small { color: rgba(244,248,241,.5); font-size: .82rem; }
.contact__info a { border-bottom: 1px solid transparent; transition: border-color .35s var(--ease), color .35s var(--ease); }
.contact__info a:hover { color: var(--c-oak-soft); border-color: var(--c-oak-soft); }
.qr-row { display: flex; flex-direction: column; gap: 1.6rem; align-items: flex-start; margin-top: .6rem; }
.contact__info .qr { display: flex; flex-direction: row; align-items: center; gap: 1rem; text-align: left; }
.qr img { width: 132px; height: 132px; padding: 11px; background: #fff; border-radius: 8px; transition: transform .4s var(--ease); box-shadow: 0 8px 22px rgba(0,0,0,.3); }
.contact__info .qr:hover img { transform: translateY(-3px); }
.qr span { font-family: var(--f-mono); font-size: .74rem; letter-spacing: .04em; line-height: 1.5; color: rgba(244,248,241,.82); }
.contact__info .qr:hover span { color: var(--c-oak-soft); }
.form { display: block; position: relative; z-index: 1; }
.form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem 1.6rem; }
.field { display: flex; flex-direction: column; gap: .5rem; }
.field--full { grid-column: 1 / -1; }
.field label { font-family: var(--f-mono); font-size: .64rem; letter-spacing: .2em; text-transform: uppercase; color: var(--c-oak-soft); }
.field label .req { color: var(--c-oak); margin-left: .25em; }
.field input, .field textarea, .field select { background: transparent; border: none; border-bottom: 1px solid rgba(231,216,189,.4); color: var(--c-bg); padding: .7rem 0; font-family: var(--f-sans); font-size: 1rem; transition: border-color .4s var(--ease); }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--c-oak-soft); }
.field textarea { resize: vertical; min-height: 90px; }
.field select { cursor: pointer; -webkit-appearance: none; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='none' stroke='%23e7d8bd' stroke-width='1.2' d='M1 1l4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .2rem center; padding-right: 1.4rem; }
.field select option { color: #29251f; background: #eef0e9; }
.form__foot { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; margin-top: 2rem; }
.form .btn { border-color: var(--c-oak-soft); color: var(--c-bg); }
.form .btn:hover { background: var(--c-oak-soft); color: var(--c-green); border-color: var(--c-oak-soft); }
.form__note { font-family: var(--f-mono); font-size: .72rem; color: rgba(244,248,241,.55); letter-spacing: .03em; flex: 1; min-width: 200px; }
.form__note.ok { color: var(--c-oak-soft); }
.gform-sink { display: none; }
.form.sent .form__grid, .form.sent .form__foot .btn { opacity: .4; pointer-events: none; }

/* =========================================================
   Footer
   ========================================================= */
.site-footer { background: linear-gradient(180deg, #3a2410 0%, #2a1a0b 100%); color: rgba(244,248,241,.7); border-top: 1px solid rgba(231,216,189,.16); }
.site-footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; padding-block: 2.4rem; }
.site-footer .brand .logo-mark { color: var(--c-oak-soft); height: 56px; }
.site-footer .brand .zh, .site-footer .brand .en { color: var(--c-bg); }
.site-footer .f-links { display: flex; gap: 1.6rem; font-family: var(--f-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; }
.site-footer .f-links a:hover { color: var(--c-oak-soft); }
.site-footer .copy { width: 100%; padding-top: 1.4rem; border-top: 1px solid rgba(231,216,189,.14); font-family: var(--f-mono); font-size: .68rem; letter-spacing: .05em; color: rgba(244,248,241,.45); }

/* LINE fab */
.line-fab { position: fixed; right: clamp(16px, 3vw, 30px); bottom: clamp(16px, 3vw, 30px); z-index: 90; width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: var(--c-green); color: #fff; border: 1px solid rgba(255,255,255,.14); box-shadow: 0 8px 20px rgba(30,40,30,.32); transition: transform .35s var(--ease), background .35s var(--ease); }
.line-fab:hover { transform: translateY(-3px); background: var(--c-green-deep); }
.line-fab svg { width: 24px; height: 24px; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 880px) {
  .nav-toggle { display: flex; }
  .site-header.scrolled { backdrop-filter: none; -webkit-backdrop-filter: none; }
  .hero__layer { min-height: 0; }
  .hero__block { display: none; }
  .hero__media { position: relative; width: 100%; height: 300px; top: 0; margin-bottom: -56px; }
  .hero__card { width: 100%; }
  .hero__mark { display: none; }
  .about__layer { grid-template-columns: 1fr; }
  .about__media { max-width: 460px; }
  .about__card { margin-left: 0; margin-top: -48px; width: 92%; margin-inline: auto; }
  .contact__layout { grid-template-columns: 1fr; }
  /* 常見問題：行動版改為手風琴，點擊題目即在該題下方展開答案 */
  .faq2 { display: flex; flex-direction: column; }
  .faq2__tabs, .faq2__panels { display: contents; }
  .qtab { border-right: none; border-bottom: 1px solid var(--c-line-2); }
  .qtab::after { content: "+"; margin-left: auto; font-size: 1.3rem; line-height: 1; color: var(--c-oak); transition: color .3s var(--ease); }
  .qtab.active::after { content: "\2013"; color: #fff; }
  .qtab[data-i="0"] { order: 0; } .qpanel[data-i="0"] { order: 1; }
  .qtab[data-i="1"] { order: 2; } .qpanel[data-i="1"] { order: 3; }
  .qtab[data-i="2"] { order: 4; } .qpanel[data-i="2"] { order: 5; }
  .qtab[data-i="3"] { order: 6; } .qpanel[data-i="3"] { order: 7; }
  .qtab[data-i="4"] { order: 8; } .qpanel[data-i="4"] { order: 9; }
  .qtab[data-i="5"] { order: 10; } .qpanel[data-i="5"] { order: 11; }
  .qpanel.active { padding: clamp(1.2rem, 5vw, 1.7rem) clamp(1.3rem, 5vw, 1.8rem); background: var(--c-bg); border-bottom: 1px solid var(--c-line); }
  .qpanel h4 { display: none; }
  .hero__scroll { display: none; }
  .svc-cards { grid-template-columns: 1fr; }

  /* 服務流程：行動版改為縱向精簡時間軸（無橫向卷軸、單畫面、單手可瀏覽） */
  .process { padding-block: clamp(2.4rem, 9vw, 3.4rem); }
  .proc-logo { display: none; }
  .process__head { margin-bottom: clamp(1.3rem, 5vw, 1.9rem); }
  .proc-scroll { overflow: visible; padding-top: 0; padding-bottom: 0; }
  .proc-track { grid-template-columns: 1fr; min-width: 0; }
  .proc-line { display: none; }
  .proc-step { display: grid; grid-template-columns: 46px 1fr; grid-template-areas: "node title" "node desc"; column-gap: .95rem; align-content: start; text-align: left; padding: 0 0 .9rem; }
  .proc-step:last-of-type { padding-bottom: 0; }
  .proc-step__node { grid-area: node; width: 46px; height: 46px; }
  .proc-step__node svg { width: 20px; height: 20px; }
  .proc-step::before { content: ""; position: absolute; left: 22px; top: 46px; bottom: 0; width: 2px; background: var(--nc); z-index: 0; }
  .proc-step:last-of-type::before { display: none; }
  .proc-step__title { grid-area: title; align-self: center; margin: 0; font-size: 1.06rem; }
  .proc-step__desc { grid-area: desc; max-width: none; margin: .2rem 0 0; font-size: .84rem; line-height: 1.5; }
}
@media (max-width: 620px) {
  .brk { display: none; }
}
@media (max-width: 520px) {
  .form__grid { grid-template-columns: 1fr; }
  .stats { gap: 1.4rem 2rem; }
  .site-footer .wrap { flex-direction: column; align-items: flex-start; }
  .contact__info .qr { flex-direction: column; align-items: flex-start; }
}